Stuart Richardson
Active member
I was just looking at my old 5cm summarit, and it has 15 aperture blades that form a near perfect circle at all apertures. Are there any lenses with more aperture blades than that? I assume it is going to skew towards older lenses and rangefinder lenses since they did not require automatic stop down. I am guessing maybe some of the old large format portrait lenses have lots and lots of blades, but does anyone know of lenses with more than 15? That seems like a lot...